Permanent magnet electrical machines

Details Permanent magnet electrical machines Permanent magnet electrical machines

1972-11-13

1976-08-31

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 63, H02K 906

Patent

active

039783545

ABSTRACT:
Electrical machines comprising a rotatable armature and permanent magnets surrounding and separated from the armature by air gaps having a length to width ratio not greater than 60:1 and a minimum width of 0.040 inch irrespective of the length to width ratio, thereby allowing cooling air to be circulated through the air gaps as well as through the annular gaps between the magnets. Such machines have a substantially higher steady state power output than permanent magnet machines of the same overall dimensions designed in accord with conventional techniques because of materially improved armature cooling.

REFERENCES:
patent: 2707242 (1955-04-01), Baudry
patent: 3427484 (1969-02-01), Karlby et al.
"Ceramic Magnets for a New Generation of PM Motors," Leow and Gilhardt, Insulation/Circuits, 7/70, vol. 16, No. 8.

Affiliated with

Also associated with

Rating

Permanent magnet electrical machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Permanent magnet electrical machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnet electrical machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1817771